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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
While astronaut Gene Cernan was on the lunar surface during the Apollo 17 mission, his spacesuit collected loads of lunar dust. The gray, powdery substance stuck to the fabric and entered the capsule causing eye, nose, and throat irritation dubbed “lunar hay fever.” Credit: NASACredit: NASA Moon dust, or regolith, isn’t like the particles on Earth that collect on bookshelves or tabletops – it’s abrasive and it clings to everything. Throughout NASA’s Apollo missions to the Moon, regolith posed a challenge to astronauts and valuable space hardware.
During the Apollo 17 mission, astronaut Harrison Schmitt described his reaction to breathing in the dust as “lunar hay fever,” experiencing sneezing, watery eyes, and a sore throat. The symptoms went away, but concern for human health is a driving force behind NASA’s extensive research into all forms of lunar soil.
The need to manage the dust to protect astronaut health and critical technology is already beneficial on Earth in the fight against air pollution.
Working as a contributor on a habitat for NASA’s Next Space Technologies for Exploration Partnerships (NextSTEP) program, Lunar Outpost Inc. developed an air-quality sensor system to detect and measure the amount of lunar soil in the air that also detects pollutants on Earth.
Originally based in Denver, the Golden, Colorado-based company developed an air-quality sensor called the Space Canary and offered the sensor to Lockheed Martin Space for its NextSTEP lunar orbit habitat prototype. After the device was integrated into the habitat’s environmental control system, it provided distinct advantages over traditional equipment.
Rebranded as Canary-S (Solar), the sensor is now meeting a need for low-cost, wireless air-quality and meteorological monitoring on Earth. The self-contained unit, powered by solar energy and a battery, transmits data using cellular technology. It can measure a variety of pollutants, including particulate matter, carbon monoxide, methane, sulfur dioxide, and volatile organic compounds, among others. The device sends a message up to a secure cloud every minute, where it’s routed to either Lunar Outpost’s web-based dashboard or a customer’s database for viewing and analysis.
The oil and gas industry uses the Canary-S sensors to provide continuous, real-time monitoring of fugitive gas emissions, and the U.S. Forest Service uses them to monitor forest-fire emissions.
“Firefighters have been exhibiting symptoms of carbon monoxide poisoning for decades. They thought it was just part of the job,” explained Julian Cyrus, chief operating officer of Lunar Outpost. “But the sensors revealed where and when carbon monoxide levels were sky high, making it possible to issue warnings for firefighters to take precautions.”
The Canary-S sensors exemplify the life-saving technologies that can come from the collaboration of NASA and industry innovations.
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Last Updated Sep 17, 2024 Related Terms
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By Space Force
As Delivered by Chief of Space Operations U.S. Space Force Gen. Chance Saltzman on September 17, 2024
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By NASA
NASA wants you to visualize the future of space exploration! This art challenge is looking for creative, artistic images to represent NASA’s Moon to Mars Architecture, the agency’s roadmap for crewed exploration of deep space. With NASA’s Moon to Mars Objectives in hand, the agency is developing an architecture for crewed exploration of the Moon, Mars, and beyond. Using systems engineering processes, NASA has begun to perform the analyses and studies needed to make informed decisions about a sustained lunar evolution and initial human missions to Mars. NASA’s Moon to Mars Architecture currently includes four segments of increasing complexity: Human Lunar Return, Foundational Exploration, Sustained Lunar Evolution, and Humans to Mars. For this competition, NASA is interested in your artistic interpretation of the latter two segments: Sustained Lunar Evolution and Humans to Mars. These depictions could include operations in space, on the surface, or both. Artists may develop and submit a still image for either the lunar and Mars exploration segments.
Award: $10,000 in total prizes
Open Date: September 12, 2024
Close Date: October 31, 2024
For more information, visit: https://nasa.yet2.com/
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By NASA
5 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Tests on Earth appear to confirm how the Red Planet’s spider-shaped geologic formations are carved by carbon dioxide.
Spider-shaped features called araneiform terrain are found in the southern hemisphere of Mars, carved into the landscape by carbon dioxide gas. This 2009 image taken by NASA’s Mars Reconnaissance Orbiter shows several of these distinctive formations within an area three-quarters of a mile (1.2 kilometers) wide. NASA/JPL-Caltech/University of Arizona Dark splotches seen in this example of araneiform terrain captured by NASA’s Mars Reconnaissance Orbiter in 2018 are believed to be soil ejected from the surface by carbon dioxide gas plumes. A set of experiments at JPL has sought to re-create these spider-like formations in a lab. NASA/JPL-Caltech/University of Arizona Since discovering them in 2003 via images from orbiters, scientists have marveled at spider-like shapes sprawled across the southern hemisphere of Mars. No one is entirely sure how these geologic features are created. Each branched formation can stretch more than a half-mile (1 kilometer) from end to end and include hundreds of spindly “legs.” Called araneiform terrain, these features are often found in clusters, giving the surface a wrinkled appearance.
The leading theory is that the spiders are created by processes involving carbon dioxide ice, which doesn’t occur naturally on Earth. Thanks to experiments detailed in a new paper published in The Planetary Science Journal, scientists have, for the first time, re-created those formation processes in simulated Martian temperatures and air pressure.
Here’s a look inside of JPL’s DUSTIE, a wine barrel-size chamber used to simulate the temperatures and air pressure of other planets – in this case, the carbon dioxide ice found on Mars’ south pole. Experiments conducted in the chamber confirmed how Martian formations known as “spiders” are created.NASA/JPL-Caltech “The spiders are strange, beautiful geologic features in their own right,” said Lauren Mc Keown of NASA’s Jet Propulsion Laboratory in Southern California. “These experiments will help tune our models for how they form.”
The study confirms several formation processes described by what’s called the Kieffer model: Sunlight heats the soil when it shines through transparent slabs of carbon dioxide ice that built up on the Martian surface each winter. Being darker than the ice above it, the soil absorbs the heat and causes the ice closest to it to turn directly into carbon dioxide gas — without turning to liquid first — in a process called sublimation (the same process that sends clouds of “smoke” billowing up from dry ice). As the gas builds in pressure, the Martian ice cracks, allowing the gas to escape. As it seeps upward, the gas takes with it a stream of dark dust and sand from the soil that lands on the surface of the ice.
When winter turns to spring and the remaining ice sublimates, according to the theory, the spiderlike scars from those small eruptions are what’s left behind.
These formations similar to the Red Planet’s “spiders” appeared within Martian soil simulant during experiments in JPL’s DUSTIE chamber. Carbon dioxide ice frozen within the simulant was warmed by a heater below, turning it back into gas that eventually cracked through the frozen top layer and formed a plume.NASA/JPL-Caltech Re-Creating Mars in the Lab
For Mc Keown and her co-authors, the hardest part of conducting these experiments was re-creating conditions found on the Martian polar surface: extremely low air pressure and temperatures as low as minus 301 degrees Fahrenheit (minus 185 degrees Celsius). To do that, Mc Keown used a liquid-nitrogen-cooled test chamber at JPL, the Dirty Under-vacuum Simulation Testbed for Icy Environments, or DUSTIE.
“I love DUSTIE. It’s historic,” Mc Keown said, noting that the wine barrel-size chamber was used to test a prototype of a rasping tool designed for NASA’s Mars Phoenix lander. The tool was used to break water ice, which the spacecraft scooped up and analyzed near the planet’s north pole.
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This video shows Martian soil simulant erupting in a plume during a JPL lab experiment that was designed to replicate the process believed to form Martian features called “spiders.” When a researcher who had tried for years to re-create these conditions spotted this plume, she was ecstatic. NASA/JPL-Caltech For this experiment, the researchers chilled Martian soil simulant in a container submerged within a liquid nitrogen bath. They placed it in the DUSTIE chamber, where the air pressure was reduced to be similar to that of Mars’ southern hemisphere. Carbon dioxide gas then flowed into the chamber and condensed from gas to ice over the course of three to five hours. It took many tries before Mc Keown found just the right conditions for the ice to become thick and translucent enough for the experiments to work.
Once they got ice with the right properties, they placed a heater inside the chamber below the simulant to warm it up and crack the ice. Mc Keown was ecstatic when she finally saw a plume of carbon dioxide gas erupting from within the powdery simulant.
“It was late on a Friday evening and the lab manager burst in after hearing me shrieking,” said Mc Keown, who had been working to make a plume like this for five years. “She thought there had been an accident.”
The dark plumes opened holes in the simulant as they streamed out, spewing simulant for as long as 10 minutes before all the pressurized gas was expelled.
The experiments included a surprise that wasn’t reflected in the Kieffer model: Ice formed between the grains of the simulant, then cracked it open. This alternative process might explain why spiders have a more “cracked” appearance. Whether this happens or not seems dependent on the size of soil grains and how embedded water ice is underground.
“It’s one of those details that show that nature is a little messier than the textbook image,” said Serina Diniega of JPL, a co-author of the paper.
What’s Next for Plume Testing
Now that the conditions have been found for plumes to form, the next step is to try the same experiments with simulated sunlight from above, rather than using a heater below. That could help scientists narrow down the range of conditions under which the plumes and ejection of soil might occur.
There are still many questions about the spiders that can’t be answered in a lab. Why have they formed in some places on Mars but not others? Since they appear to result from seasonal changes that are still occurring, why don’t they seem to be growing in number or size over time? It’s possible that they’re left over from long ago, when the climate was different on Mars— and could therefore provide a unique window into the planet’s past.
For the time being, lab experiments will be as close to the spiders as scientists can get. Both the Curiosity and Perseverance rovers are exploring the Red Planet far from the southern hemisphere, which is where these formations appear (and where no spacecraft has ever landed). The Phoenix mission, which landed in the northern hemisphere, lasted only a few months before succumbing to the intense polar cold and limited sunlight.
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Andrew Good
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-2433
andrew.c.good@jpl.nasa.gov
Karen Fox / Molly Wasser
Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
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Last Updated Sep 11, 2024 Related Terms
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By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Urban air mobility means a safe and efficient system for vehicles, piloted or not, to move passengers and cargo within a city.NASA As the aviation industry evolves, new air vehicles and operators are entering the airspace. NASA is working to ensure these new diverse set of operations can be safely integrated into the current airspace. The agency is researching how traditional and emerging aircraft operations can efficiently operate in a shared airspace.
NASA’s Air Traffic Management-eXploration (ATM-X) project is a holistic approach to advancing a digital aviation ecosystem through research, development and testing. To accommodate the growing complexity and scale of new operations in Advanced Air Mobility (AAM), ATM-X leverages technologies that contribute to transforming the national airspace, improving airspace access, and making operations safer and more efficient for all users.
ATM-X fosters access to data by enhancing the availability of digital information and predictive services – including flight traffic predictions – for airspace operations.
ATM-X works closely with the Federal Aviation Administration (FAA), commercial partners, industry experts, and stakeholders in evaluating the sustainable impacts of emerging mobility solutions. ATM-X is conducting research to augment current key stakeholders that enable safe operations today such as pilots and air traffic controllers. Through these cooperations, ATM-X researches and validates technological advances in computing, communications, and increasingly automated technologies to support the continued evolution of aviation operations.
ATM-X supports the modernization of today’s air transportation system through a diverse portfolio of core capabilities, which include remotely supervised missions up through high-altitude operations. The four research subprojects under ATM-X work collaboratively to enable a robust transformation of the National Airspace System (NAS).
NASA/Maria Werries Unmanned Aircraft System Traffic Management Beyond-Visual-Line-of Sight (UTM-BVLOS)
UTM BVLOS is supporting the future of aviation by operationalizing UTM for safe use of drones in our everyday lives. UTM BVLOS is part of a new traffic management paradigm called Extensible Traffic Management (xTM) that will use digital information exchange, cooperative operating practices, and automation to provide air traffic management for remotely piloted operations for small UAS beyond an operator’s visual line of sight. This project focuses on enabling operations in a low- altitude airspace, including drone package delivery and public safety operations.
As the FAA works to authorize these types of flights, NASA’s UTM BVLOS team is working with industry to ensure these operations can be routine, safe, and efficient. One such effort is the industry-driven “Key Site Operational Evaluation” out of North Texas, where UTM BVLOS is helping to test UTM tools and services in an operational context.
Digital Information Platform (DIP)
DIP is focused on increasing access to digital information to enable increasingly sustainable and efficient operations for today and future airspace systems. DIP is prototyping a digital service-oriented framework that uses machine learning to provide information, including traffic predictions, weather information, and in-time flight trajectory updates. DIP tests and validates key services for end-to-end trajectory planning and surface operations.
DIP is engaging with the FAA, industry, flight operators, and relevant stakeholders, in a series of Sustainable Flight National Partnership – Operations demonstrations to support the United States Climate Action Plan objective of net-zero emissions by 2050. Through these types of collaborations, DIP tests and validates key services and capabilities for end-to-end trajectory planning and surface operations.
Pathfinding for Airspace with Autonomous Vehicles (PAAV)
PAAV is focused on enabling remotely piloted operations in today’s airspace, which includes assessing increasingly automated capabilities to allow safe operations across all phases of flight.
PAAV is working with key stakeholders, including the FAA, industry standards organizations, and industry partners to develop an ecosystem which helps validate standards, concepts, procedures, and technology. This research will help test and validate a broad range of tools and services that could provide critical information and functions necessary for remotely piloted operations at lower complexity airspace shared with conventional aircrafts. This includes ground-based surveillance to detect and avoid hazards, command and control communications, and relevant weather information, which is critical for safe, seamless, and scalable UAS cargo operations.
NAS Exploratory Concepts & Technologies (NExCT)
Advancements in aircraft design, power, and propulsion systems are enabling high-altitude long-endurance vehicles, such as balloons, airships, and solar aircraft to operate at altitudes of 60,000 feet and above. This airspace is referred to as “Upper Class E” airspace in the United States, or ETM. These advancements open doors to benefits ranging from increased internet coverage, improved disaster response, expanded scientific missions, to even supersonic flight. To accommodate and foster this growth, NExCT is developing a new traffic management concept in this airspace.
NExCT is working with the FAA and industry partners to extend a new concept for safely integrating and scaling air traffic across UTM, UAM, and ETM, collectively referenced as the Extensible Traffic Management (xTM) domain. Together, this research project will enable, test, and validate a common xTM framework that is efficient and safe.
ATM-X
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Last Updated Sep 11, 2024 EditorJim BankeContactHillary Smithhillary.smith@nasa.gov Related Terms
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